Lexus ES manuals

Lexus ES: Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received (U040181)

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / Cruise Control / Dynamic Radar Cruise Control System (for Gasoline Model) / Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received (U040181)

DESCRIPTION

If the ECM cannot recognize the forward recognition camera. DTC U040181 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

DTC Output from

U040181

Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received

Approximately 17 seconds or more after the engine switch is turned on (IG), the ECM cannot recognize the forward recognition camera for approximately 2 seconds or more.

ECM

Does not come on

Radar Cruise2

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the ECM, refer to Registration.

Click here

PROCEDURE

1.

CHECK FOR DTCs

(a) Clear the DTCs.

Powertrain > Radar Cruise2 > Clear DTCs

(b) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

(c) Check for DTCs.

Powertrain > Radar Cruise2 > Trouble Codes

Result

Proceed to

DTC U040181 is not output

A

DTC U040181 is output

B
A

USE SIMULATION METHOD TO CHECK

B

REPLACE ECM

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